code: def test_rank(self):
      ranks, scores = self.model.rank("O wherefore art thou", CHOICES)
      self.assertEqual(
          self.model.__class__.__name__, "PtTransformersRerankPlugin"
      )
      self.assertIsInstance(ranks, list)
      self.assertEqual(len(CHOICES), len(ranks))
  
file_path: nboost/tests/unit/test_pt_bert_model.py
imports: from nboost.plugins import resolve_plugin
  from nboost import defaults
  import unittest
  from random import shuffle
label_desc: Use image node_id 2 for calling the TestPtTransformersRerankPlugin obj's underlying member method code with example usage: obj.test_rank() without return types